Multispectral imaging: an application to density measurement of photographic paper in the manufacturing process control

Raju Shrestha; Jon Yngve Hardeberg

doi:10.1117/12.2083280

27 February 2015 Multispectral imaging: an application to density measurement of photographic paper in the manufacturing process control

Raju Shrestha, Jon Yngve Hardeberg

Author Affiliations +

Proceedings Volume 9405, Image Processing: Machine Vision Applications VIII; 94050G (2015) https://doi.org/10.1117/12.2083280
Event: SPIE/IS&T Electronic Imaging, 2015, San Francisco, California, United States

Abstract

In this paper, we present an industrial application of multispectral imaging, for density measurement of colorants in photographic paper. We designed and developed a 9-band LED illumination based multispectral imaging system specifically for this application in collaboration with FUJIFILM Manufacturing Europe B.V., Tilburg, Netherlands. Unlike a densitometer, which is a spot density measurement device, the proposed system enables fast density measurement in a large area of a photo paper. Densities of the four colorants (CMYK) at every surface point in an image are calculated from the spectral reflectance image. Fast density measurements facilitate automatic monitoring of density changes (which is proportional to thickness changes), which helps control the manufacturing process for quality and consistent output. Experimental results confirm the effectiveness of the proposed system.

Citation Download Citation

Raju Shrestha and Jon Yngve Hardeberg "Multispectral imaging: an application to density measurement of photographic paper in the manufacturing process control", Proc. SPIE 9405, Image Processing: Machine Vision Applications VIII, 94050G (27 February 2015); https://doi.org/10.1117/12.2083280

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